Do I need to create model objects (Entity Framework) from the database when the application starts?

Question

.NET

The essence of what is happening is as follows. There is a C# Entity Framework Code First application, there is a data model. If I run the application and create objects, then they are in RAM and EF fills the database. Suddenly (accidentally / on purpose) the application closes and when it opens again, the application will not know about these objects, but they will be in the database.
Attention connoisseurs ... a question! How should the application be built? When loading, you need to go through your database and recreate all the objects from it in RAM, or the entire application logic must work with queries to the database, and the objects themselves exist only while EF adds them to the database.
Clarification, yes I am the bottom, but it is very necessary to organize work with the database)

Answer 1

all application logic must work with database queries

everything before and after is imagination. practice and everything will become clear